<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<a href="gom.html">跳转到gom页面</a>
		<button type="button" onclick="btu2();">后退</button>
		<button type="button" onclick="btu3();">前进</button>
		<button type="button" onclick="btu4();">页面刷新</button>
	</body>
	<script type="text/javascript">
		function btu2()
		{
			history.go(-1);
		}
		function btu3()
		{
			history.go(1);
		}
		function btu4()
		{
			location.reload();
		}
	</script>
</html>
